Your new combined field would be a calculation field of the fields you want to combined:
Sample Calculation to combine fields:
Field1 &" "& field2 & " " & field3
Note " " is adding a space in between each field, so if a space is not needed then you can leave off " " &
I suggest providing an example of what you want. There are a great many different ways to combine data from a great many different table designs.
Sorry I haven't explained very well above, what I am trying to do is duplicate all the text values in a table field to a single field separated by coma's. Hope this makes sense.
I then want to combine them into a single field
Adam, Daniel, Rob
And are these all from records in the same table as the field where you want to combine them or are they from a related table?
If from a related table, you can do this:
Substitute ( List ( RelatedTable::Field ) ; ¶ ; ", " )
There are also ways to use ExecuteSQL to generate such a list (from any table in your file and using a WHERE clause to specify which records supply values to the list) by specifying a comma as the record separator.